Why I Switched from Grammarly to ProWritingAid (And Never Looked Back)

Why I Switched from Grammarly to ProWritingAid (And Never Looked Back)

I was a loyal Grammarly user for three years. I recommended it to everyone. I wrote about it positively. I bought the Premium subscription without thinking twice.

Then I started writing a book.

Within two weeks of working on a 70,000-word manuscript, I ran into Grammarly's ceiling. It caught my comma splices and passive voice faithfully. But it couldn't tell me that I'd used the phrase "nodded slowly" 14 times in 40 pages. It couldn't analyze whether my dialogue felt natural. It couldn't show me a graph of my sentence length variation to reveal where my prose was getting monotonous.

ProWritingAid could do all of that.

I didn't switch instantly — I spent six weeks running both tools in parallel on the same manuscript before I was convinced. Here's the complete honest story of what ProWritingAid does, how it compares to Grammarly, and who should make the switch.

What Is ProWritingAid?

ProWritingAid is an AI-powered writing analysis tool launched in 2012. Unlike Grammarly — which focuses on real-time inline suggestions — ProWritingAid is built around comprehensive writing reports that analyze your text from multiple angles simultaneously.

Where Grammarly flags individual issues as you write, ProWritingAid runs a complete diagnostic on your document and shows you patterns, tendencies, and recurring problems across the entire piece.

According to ProWritingAid's website, the platform integrates with all major writing applications and supports over 20 document formats. It's particularly popular with fiction writers, non-fiction authors, and professional editors.

The 25+ Reports: What Actually Gets Analyzed

This is where ProWritingAid pulls away from every other editing tool. The reports aren't just nice-to-haves — for serious writers, they're genuinely illuminating.

Grammar and Style Report

The basic foundation: catches grammar errors, unclear pronoun references, missing articles, and style issues. Comparable in accuracy to Grammarly Premium for standard corrections.

Overused Words Report

This one stopped me cold the first time I ran it. The report highlighted that in a 5,000-word chapter, I had used:

• "just" — 23 times
• "very" — 18 times
• "really" — 12 times
• "seemed" — 9 times

I already knew these were weak words in theory. Seeing the actual count made me fix them.

Sentence Length Variation Report

ProWritingAid visualizes your sentence lengths as a bar chart. Long stretches of same-length sentences show up immediately as flat lines — a visual signal that your prose rhythm is becoming monotonous. This single report improved my fiction writing more than any other feedback I've ever received.

Clichés and Redundancies Report

Lists every cliché in your document. "Burning the midnight oil," "at the end of the day," "in no uncertain terms" — ProWritingAid catches them all. One chapter of my manuscript had 22 flagged clichés I hadn't consciously noticed.

Pacing Report (Fiction)

For fiction writers, this is extraordinary. ProWritingAid color-codes your manuscript by pacing speed — fast, medium, slow — based on action density, dialogue vs. description ratios, and scene structure. I could immediately see that my second act was 40 pages of slow pacing with zero fast sections. That insight would have taken a professional editor hours to convey.

Dialogue Tags Report

Flags non-standard dialogue tags ("she smiled," "he coughed" used as speech verbs) and overused tags. Essential for fiction writing.

Consistency Report

Checks for inconsistent spelling of character names, hyphenation, capitalization, and terminology across long documents. Invaluable for manuscripts where "gray" appears in chapter 1 and "grey" appears in chapter 15.

ProWritingAid vs. Grammarly: The Real Comparison

I spent six weeks running both tools on the same 40,000-word manuscript. Here's the honest breakdown:

The summary: Grammarly wins on ubiquity and ease of use. It works everywhere, requires no learning curve, and catches real-time issues seamlessly. ProWritingAid wins on depth of analysis — if you want to genuinely understand your writing patterns and improve them systematically.

The Lifetime License: The Financial Case for ProWritingAid

ProWritingAid offers something Grammarly doesn't: a one-time lifetime license for $399.

If you're comparing costs over 5 years:

• Grammarly Premium: $12/month × 60 months = $720
• ProWritingAid Annual: $120/year × 5 years = $600
• ProWritingAid Lifetime: $399 once

If you're a writer who plans to use editing tools long-term, the ProWritingAid lifetime license is objectively better value. I purchased the lifetime license in year 2 and have never had a second thought about it.

Who Should Switch to ProWritingAid?

Make the switch if you:

• Write long-form content regularly (books, scripts, detailed reports)
• Are a fiction writer who wants deep narrative analysis
• Use Scrivener as your primary writing tool
• Want to genuinely improve your writing habits (not just fix individual errors)
• Plan to use a writing tool for 3+ years (lifetime license economics)

Stick with Grammarly if you:

• Write primarily short-form content (emails, social media, blog posts)
• Need editing suggestions everywhere (mobile, multiple devices, casual contexts)
• Prefer a low learning curve and quick setup
• Want the best real-time inline experience

What I Missed After Switching

I want to be honest: I did miss some things about Grammarly.

The browser extension coverage. Grammarly catches errors in every text field I use — Twitter, Gmail, Notion, Slack. ProWritingAid's browser extension exists but is less seamless. I still have Grammarly's free extension installed for casual web writing.

The mobile experience. ProWritingAid's mobile app is basic compared to Grammarly's full-featured keyboard. For phone-based writing, Grammarly is clearly better.

The simplicity. ProWritingAid has a steeper learning curve. The first time I ran a full report and saw 400+ suggestions across 25 categories, I nearly closed the tab. Give it time — within a week, you learn which reports matter for your work.

Getting Started With ProWritingAid in 10 Minutes

1. Sign up for the free plan — test it on a 500-word sample from your current project
2. Run the Grammar report first — your baseline correction layer
3. Run the Style report — often the most immediately actionable
4. Run the Overused Words report — prepare to be humbled
5. Set up your Writing Goals — configure for fiction/non-fiction, formality, genre

Don't try to implement every suggestion from every report in one pass. Work through reports one at a time over multiple editing sessions.

For more AI writing tools worth adding to your stack, check out our guides on Grammarly AI and the best free AI writing tools. For generating first drafts before you edit, see our Jasper AI review.

Frequently Asked Questions

Is ProWritingAid better than Grammarly?

ProWritingAid is better for deep manuscript editing and long-form writing analysis. Grammarly is better for real-time suggestions across all apps and casual daily writing. The choice depends on your primary use case.

How much does ProWritingAid cost?

Monthly ($30), annual ($120/year), or lifetime license ($399 one-time payment). The lifetime license makes it significantly cheaper than Grammarly over 3+ years.

Does ProWritingAid have a free version?

Yes — up to 500 words per document with basic reports. Useful for testing but limited for serious use.

What reports does ProWritingAid offer?

25+ reports including Grammar, Style, Overused Words, Clichés, Readability, Sentence Length Variation, Pacing, Dialogue, and Consistency.

Can ProWritingAid be used with Scrivener?

Yes. ProWritingAid integrates directly with Scrivener on Windows — a significant advantage over Grammarly for novelists.

Final Thoughts

I haven't regretted the switch for a single day.

ProWritingAid made me a better writer in ways that Grammarly never could — not because Grammarly is inferior, but because fixing individual errors in real-time and analyzing whole-document patterns are fundamentally different activities. I still use Grammarly's free extension for casual web writing. But for anything that matters, ProWritingAid is open on my second monitor.

If you write long-form content seriously, give ProWritingAid's free tier a proper 2-week test on your current project. The Overused Words report alone will probably show you something about your writing you've never seen before.

And if you're looking to pair editing tools with AI writing assistants, our complete AI writing tools overview covers the full ecosystem — from generation to editing to SEO optimization.